Messages in this thread |  | | Date | Fri, 8 Dec 2000 11:43:50 -0800 (PST) | From | "Dr. Kelsey Hudson" <> | Subject | Re: Signal 11 |
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On Fri, 8 Dec 2000 davej@suse.de wrote:
> On Thu, 7 Dec 2000, Jeff V. Merkey wrote: > > > I think there may be a case when a process forks, that the MMU or some > > other subsystem is either not setting the page bits correctly, or > > mapping in a bad page. It's a LEVEL I bug in 2.4 is this is the case, > > BTW. In core dumps (I've looked at 2 of them from SSH) it barfs right > > after executing fork() or one of the exec functions and at some places > > in the code where there's not any obvious coding bugs. Looks like some > > type of mapping problem. I reported it three months ago, but it was > > pretty much ignored. > > > > Linus needs to add this one to the pre-12 list -- looks like some type > > of mapping bug. > > Now that you mention it, every app that has bombed has been the type > that forks a lot. MpegTV, gtv, and make spring to mind. All apps drive > the CPU load up quite a lot, which was why I initially suspected > overheating. I don't see it on my other 2.4 boxes though which is > suspicious. But they don't get as much of a beating as this, which was > up until last week my main workstation.
Just to add some input and insight on here, I loaded the system down with some FFT algorithms, and then ran an 8-way kernel compile. The machine in question is a dual P3/600 with 512MB RAM, 2.4.0-test11. The load skyrocketed to a mere 13.6. xmms was still running, didn't skip even once. The FFT algorithms didn't bitch at all. Neither did the kernel compile. In fact, it compiled without a hitch...
I dunno what to say about these boxes that segfault all the time... Probably just bad hardware somewhere along the lines.
Kelsey Hudson khudson@ctica.com Software Engineer Compendium Technologies, Inc (619) 725-0771 ---------------------------------------------------------------------------
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